岩山火山锥
2014-03-04 00:00:00
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<span style="line-height:2;font-family:SimSun;font-size:14px;"> 岩山火山锥属复式火山锥,为火山多次喷发形成。锥体平</span><span style="line-height:2;font-family:SimSun;font-size:14px;">面上呈近等轴状,锥底直径约1600米,面积约2平方公里。锥</span><span style="line-height:2;font-family:SimSun;font-size:14px;">体底部海拔1390米,顶部海拔1623米,锥体高度约233米,火</span><span style="line-height:2;font-family:SimSun;font-size:14px;">山口深度约140米。锥体主要由褐红、紫红色熔结集块岩和少</span><span style="line-height:2;font-family:SimSun;font-size:14px;">量熔岩组成,锥体西侧是晚期岩浆溢出的位置。岩山火山锥形</span><span style="line-height:2;font-family:SimSun;font-size:14px;">成时间距今约2000年,是一座活火山。</span>
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<img width="600" height="243" alt="" src="/public/html_images/20140304/20140304235553_24.png" />
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<span style="line-height:2;font-family:SimSun;font-size:14px;">陡峭的岩山火山口</span>
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